OI

#include<bits/stdc++.h>
using namespace std;
#define int long long
int read(){
    int k=0,f=1;
    char c=getchar_unlocked();
    while(c<'0'||c>'9'){
        if(c=='-') f=-1;
        c=getchar_unlocked();
    }
    while(c>='0'&&c<='9') k=k*10+c-'0',c=getchar_unlocked();
    return k*f;
}
void put(int x){
    if(x<0) putchar('-'),x=-x;
    if(x<10) putchar(x+'0');
    else put(x/10),putchar(x%10+'0');
}
signed main(){
    int n=read(),sum=0;
    while(n--) sum+=read();
    put(sum);
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
#define int long long
int read(){
    int k=0,f=1;
    char c=getchar_unlocked();
    while(c<'0'||c>'9'){
        if(c=='-') f=-1;
        c=getchar_unlocked();
    }
    while(c>='0'&&c<='9') k=k*10+c-'0',c=getchar_unlocked();
    return k*f;
}
void put(int x){
    if(x<0) putchar('-'),x=-x;
    if(x<10) putchar(x+'0');
    else put(x/10),putchar(x%10+'0');
}
signed main(){
    int n=read(),sum=0;
    while(n--) sum+=read();
    put(sum);
    return 0;
}